function on(id)
{
	var objectL = document.getElementById('l'+id);
	var objectR = document.getElementById('r'+id);
	objectL.innerHTML = '<img src="images/arrow_act.gif" />';
	objectL.className = 'leftmenuL_act';
	objectR.className = 'leftmenuR_act';
}

function out(id)
{
	var objectL = document.getElementById('l'+id);
	var objectR = document.getElementById('r'+id);
	objectL.innerHTML = '<img src="images/arrow.gif" />';
	objectL.className = 'leftmenuL';
	objectR.className = 'leftmenuR';
}